ENGINEERING SIZING TOOLS // MULTI-AXIAL CALCULATOR

Multi-Axial Duct Thermal Expansion & Fabric Compensator Sizing Engine

Simulate concurrent axial, lateral, and angular duct movements. Calculate developed belt width (W_dev), structural anchor force savings, and generate dynamic B2B RFQ datasheets.

1. Thermal & Process Parameters

2. Duct Geometry & Dimensions

3. Multi-Axial Movements (Concurrent)

FSA-DSJ & RAL-GZ 719 Standard Formulation

Engineering Sizing Results

Computed Linear Thermal Growth (ΔL):
64.8 mm
Developed Belt Fabric Width (W_dev):
402 mm
(Includes 12% FSA-DSJ bulging slack factor)
Recommended Fabric Expansion Joint Series:

Multi-layer high-temperature composite fabric expansion joint.

Anchor Reaction Force Savings Comparison:
Fabric Joint Reaction Force: < 150 N
Metallic Bellows Equivalent Force: ~24,000 N
99.4% Reduction in Civil Support & Anchor Loading!

Multi-Axial Duct Expansion & Sizing FAQ

How is the developed fabric belt width (W_dev) calculated for multi-axial movements? +

W_dev = √((L_inst + ΔXe)² + ΔY²) · 1.12 + 2 · W_flange, where L_inst is the installed breech gap, ΔXe is axial extension, ΔY is lateral shear, 1.12 is the 12% FSA-DSJ bulging slack safety factor, and W_flange accounts for both clamping flange faces.

What is the structural reaction force advantage of fabric joints over metallic bellows? +

Metallic bellows generate massive spring forces and pressure thrust (often exceeding 24,000 N), requiring heavy structural steel support. In contrast, fabric expansion joints produce less than 150 N of reaction force, slashing anchor structural loads by over 99%.

How does the dynamic B2B RFQ Data Sheet work? +

Clicking the B2B RFQ button instantaneously compiles all entered duct geometry, multi-axial kinematic movements, operating temperatures, and calculated sizing dimensions into a print-ready engineering data sheet with BundleTec quality certifications.

BundleTec Global

B2B TECHNICAL RFQ SPECIFICATION DATA SHEET

Non-Metallic Fabric Expansion Joint Engineering Specification Sheet
Specification Ref: BT-RFQ-2026-X948
Date: 2026-09-08
ISO 9001 · CE · RAL-GZ 719

Duct & Process Specification

Duct Material: - Medium / Process Condition: -
Duct Cross-Section & Dimensions: - Temperature Range (Tamb / Top): -
Duct Span Length (L): - Flange Clamping Width (W_flange): -

Multi-Axial Kinematic Movements

Axial Comp. (ΔXc)
-
Axial Ext. (ΔXe)
-
Lateral (ΔY)
-
Angular (θ)
-

Engineered Sizing Results

DEVELOPED BELT WIDTH (W_dev):
-
Formulation: W_dev = √((L_inst + ΔXe_eff)² + ΔY²) · 1.12 + 2 · W_flange (Incl. Angular θ)
RECOMMENDED SERIES & INSTALLED GAP:
-
Installed Gap (L_inst): - | Reaction Force: < 150 N (99.4% savings vs metallic)
Manufactured under ISO 9001:2015, RAL-GZ 719, FSA-DSJ-401/402, and ATEX 2014/34/EU quality assurance.
BundleTec Engineering: Karlıbayır Mah. Bayrak Cd. No:134D Arnavutköy / Istanbul · Tel: +90 530 675 18 99 · [email protected]